15220448 has 12 divisors (see below), whose sum is σ = 29965320. Its totient is φ = 7610208.

The previous prime is 15220441. The next prime is 15220459. The reversal of 15220448 is 84402251.

It is a happy number.

15220448 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15220441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 237788 + ... + 237851.

It is an arithmetic number, because the mean of its divisors is an integer number (2497110).

Almost surely, 2^15220448 is an apocalyptic number.

It is an amenable number.

15220448 is a deficient number, since it is larger than the sum of its proper divisors (14744872).

15220448 is an equidigital number, since it uses as much as digits as its factorization.

15220448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475649 (or 475641 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 26.

The square root of 15220448 is about 3901.3392572295. The cubic root of 15220448 is about 247.8234956376.

Adding to 15220448 its reverse (84402251), we get a palindrome (99622699).

The spelling of 15220448 in words is "fifteen million, two hundred twenty thousand, four hundred forty-eight".